Installing Focal on FP2

oli.sax

Hello!

I noticed that a Focal 20.04 devel channel is available for Fairphone2
It was announced in Q&A 139 and discussed again in Q&A 145

Note that the installer shows also a "utnext" channel but this one is empty.

I tried today the installation with the UBPorts installer and although the installer says OK, the update fails on device...

Here is the last lines of /lcache/recovery/last_log:

Formating: data
Applying update: rootfs-667574dc2fe9dfc34749223cd8e4c79d16c281c877e5085dbb08d30fa80c8ba5.tar.xz
Applying update: device-62de4f47c45b06d837264a7300848242e6310a928e58c24d2cef022c9aaa4335.tar.xz
tar: write error: No space left on device
Update faled, please reboot and try again...

oli.sax

Trying to understand the "no space left" issue...

Here is the file size:

16.04 Stable (version 23)
- ubports 356 Mo compr., 1379 Mo extr.
- device 69 Mo compr., 181 Mo extr.
20.04 Devel (version 146)
- rootfs 456 Mo compr., 1664 Mo extr.
- device 88 Mo compr., 227 Mo extr.

When 16.04 is installed, the extracted size ( 1379+181 = 1560 Mo) corresponds to this partition:

df -h
Filesystem                      Size  Used Avail Use% Mounted on
/dev/loop0                      2.0G  1.6G  241M  88% /

~~What I don't understand is why~~ 20.04 installation is failing; ~~while the extracted size (1664+227 = 1891 Mo) should still be inferior to the 2 Go partition size...~~

EDIT: I made a trial on my computer. Decompressing both rootfs and device tar.xz on an empty ext4 image file, the used space is 2,041,232 Kb; so more than the phone partition size!
There is not enough free space on the partition to hold the data. The deficit is about 170 MB.